Still can't start affiliate marketing for beginners - what am i missing?

Usually it's trying to pick the perfect niche and program before making anything. Pick a topic you can write about without forcing it, join one program that covers products in it, and write pages that answer buying questions: X vs Y, best X for a specific situation, is X worth it. Watch the program rules though. Amazon Associates for example closes accounts that don't make qualifying sales within the first 180 days, so don't sign up until you have some content live. And put a clear disclosure on any page with affiliate links. Then expect months, not weeks, before search traffic turns up.